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New Member

VMPS download

I have a UNIX based TFTP server that stores my VMPS file. The file is being update every day or so. CAT 6500 gets the file from the TFTP server with "download vmps" command manually.

What is the default timing for this download? Can I change it? Or can I push the file from Unix box to CAT switch via cron job?

Any help appreciated

Senad Palislamovic

Network Specialist

Weber State University


Re: VMPS download

I'm not sure what you're asking but I'm not aware of an automated way to download the VMPS file other than having a script login to the switch and run the necessary command. I don't think it's possible to push the file to the switch.

New Member

Re: VMPS download

I assume your Cat 6500 is running CatOS? The 'reconfirm-interval' as Cisco calls it is 60 minutes. I take it this means that every hour the Cat 6500 requests the VMPS file. To change this default, try the following:

set vmps server reconfirminterval xx

where xx is in minutes with a range of 1 - 120.

Let me know how you go on.



Re: VMPS download

I'm under the impression that the reconfirm command only applies to VMPS clients talking to VMPS servers rather than the VMPS server downloading the VMPS file.

New Member

Re: VMPS download

Thank you guys for your responses.

You are correct. Reconfirm command and its default timings apply only to the clients. Only way to get the file to the server (in this case Cat 6000) is through "download vmps". I was not able to find any reference in regards of the "auto" timings for this command. However, I did figure out different approach. A script that will be initiated by cron every 5 minutes on the Unix box. The script will telnet to the switch and execute "download vmps" to get updated information.

However, I do have another VMPS question. Has anyone implemented it at the large scale? At the first phase of the implementation I am planning to have about 5000 or so MAC entries in the VMPS file. Would this be to much for one server and one file? Does anyone has any ideas?

New Member

Re: VMPS download

A SNMP SET can be used to trigger the download of the VMPS database.

The CISCO-VMPS-MIB.oid object IDs can be found via Cisco MIBS.

Example :

$oidVmpsMib_vmpsTriggerDownload = "."

snmpset -v1 -c Private_WriteEnable_Community Cat_6000_Name $oidVmpsMib_vmpsTriggerDownload i 2

==> So no login required.

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